Leaf turner



D. s. BOYD 2,574,013

LEAF TURNER 2 SHEETSSHEET l Nov. 6, 1951 Filed Jan. 27, 1947 INVEN TOR.

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D. S. BOYD LEAF TURNER Nov. 6, 1951 2` SHEETS-SHEET 2 Filed Jan. 27, 1947 S qya? INVENTOR.

Patented Nov. 6, 17951 UNITED PATENT ,lo EFICE f u ,Y Kansas;City,=Kans. I.

Thisinvention relates .tdleaf turners',r.especially designed. for displaying sampleslasLin'zdisplaying sheets ofwallpapenor. thelike. .f

..1An important object'of.,thelinventioniis torprovide animproyement.: in.:.leaf .,pturners.A .of theatype illustrated in PatentzNo. 1\,689;l0.6;.issued.October 23, 1928, tothe endithatthe rodrusedin-.moving the pack of sheetsror leaves forwardly Withinfxthe machine, will be carried into engagementigwith thepack`.-of sheetsioreleaves, .by..the::movement of L ther chains, thereby; eliminating;- pomplicated mechanism.used.in.saidfpatentgfor'accomplishing this; result.

:Another obJ` ect. vof .,the .ginventionzis .totprouide an: elongated suction Yhead '.whichtwill: contactk the sheets. throughout. their.v entirerwidthsffto.the;;end that -Athefpossibilities :ofxfwrinklinggl orfrdamaging the :sheetsbythe suction mechanism, .are reducedtoaminimum.

`With the foregoing.,.andeotheruobjectsdnuwiew which will appear as ,the.tdescriptiongproceeds the iinvention consists :of rcertain:novelsdetailscof construction and: combinations '.of; .ffpartse'heren-v aftermore fully .described andpointed` out-:in the claims, it; being understood thatnhangesfmay *be made in the yconstructio'nffandiarrangementlaof parts kwithout departing rfromethefspiritsof the invention as claimed. n .g

'l Referring to theadrawings..

Figure 1 isa front elevationaltniewsoffaeleaff turning .device constructedrzin accordanceziwith the invention, `portions athereofvsbeingznzbroken away to illustrate the inner mechanismcofzfthe device. .y 1

.Figure 2 is a vertical sectional View through the machine, illustrating onerof--the leaves as being separated .from the packv ofleaves, byffthelsuction head. Y

Figure 3.is a sideelevational'viewpf.the device,`

oneof the side walls having been removed illustrating the pack of sheets as moved forwardly-by the `horizontalleaf- 'moving-rod. I f Figure 4 is a fragmental elevational .View illustrating the plate which operates to return the pack of leaves to their normal positions, after the last leaf of the pack has been turned.

Referring to the drawings in detail, the device embodies a frame indicated generally by the reference character 5, the frame being open at the front and rear. Y

Mounted at the upper end of the frame, are bearings 6 in which the ends of the upper shaft 1 operate. Adjacent to the bottom of the frame, are bearings 8 arranged at opposite sides of the frame, in which the ends of the shaft 9 operate,

, geminis. (olmos-104) inthe' frame tofh'ang 'from the shaft the shaft"I 9 beingprovidd with fthe'sprocket'l0 Which-issecured thereto. SprocketsV ||^aret1se cured tothe shaft 9 ltooperate therewith. 'Loosely-mounted ont-he -ls'haft 'Fare'sprockets IZthat move lover'the sprockets II. v'Idle' sprockets-I4 are disposed rbetween'the shafts 'I and 9', theidle sprockets `being 'mountedL on rthe'stub- "shafts"v "I 5 thatjare mounted: withinthe bearings" I6 :secured t0 M the inner surface ofthe 'frame 'f 5; as clearly shown' byt-hedrawings. f

The chains I3 are of the endless 'type and the rear lflight of veach chainv movesover 'the 'idle sprocket I4 associatedftherewith;tothe endthat the'rear night of each chain'is directed forwardly to apoint ladjacent'to :the 'front'of the frame at aj. point intermediate they upper-rand 'lower ends fthe frame.

'Connecting Vthe chains `I3 atopposite sidesof theframe, is a rod thei rod I'Ifbeing `h orizontally disposedl at 'all times.

Mount'ed`on'fthe`shaft 1, is asle'eve IB to which the clamp Sis connected-the clamp I9 providing means' whereby apack ofleavesimay be secured Rounded lugs 20 extend fromone end ofthesleeve Iand are fitted in correspondingly'shaped'recesses 2| formed 'inthe clutch'memb'er`22 which'is secured to the shaft 1, by meansof the pin 23`thatm'oves in'the elongated opening 24, formed in the shaft The coiledgspring '25bears against theiclut'ch member`22 at one of its ends; the oppositeend of' 'thespring being in engagement with" the Washer "L26 Y,which `Lin `vturn `bears against the sprocketJIZ, adjacent fthereto. f

,',fIhus .it .Willlbe seen'that .dueto this construction, the sleeve I8. willbe normally held against rotary..mbvement on the. shaft'I, tothe end ,thatJthe' leavesor sheets to' be displayed, Willhang vertically, as'shown by theA drawings.

'.)Pivotallyconnected withtheclamp |9,..is a plateZ'I Vwhich isl-urgedforwar'dly by means of ythe spring 28, the tension of the spring being such that it will not move the plate 21 forwardly', over the weight of the leaves or sheets which hang from the clamp, Aand. which the plate -contacts at all times.

Mounted Within the base of the frame, is an electric motor 29 one end of the motor shaft being supplied with the sprocket 30 over which the chain 3| operates, the chain 3| also operating over the sprocket I0 to transmit movement of the motor shaft to the shaft 9.

The opposite end of the motor shaft extends into the suction fan housing 32 where it operates a suction fan not shown, to create a. suction through the pipe 33 that establishes communication between the fan housing 32 and the suction head 34. This suction head 34 extends throughout the width `of the open front of the frame, and is provided with a plurality of openings 35 through which air is drawn to suck a leaf which falls adjacent thereto, against the suction head, -throughout the width of the suction head. l

Normally the book or pack of leaves to be displayed, hangs vertically within the frame of the device, before the open front of the device, so

that the outermost leaf will be clearly visible.

When it is desired to turn the outermost'leaf to expose the adjacent leaf, the motor 29 'is .setA in motion, which operates the chains -to move the..

ngfa' pack of loose Aleaves adjacent one side of the ascending flight of the elevator vproximal to said descending flight thereof; means for holdfing said descending flight bent toward said ascending night where a portion of the former is on the same-side of the pack of leaves as the ascending flight, whereby said member contacts .the jpack of leavesas it descends and swings chains in the direction of the arrows as shown in Fig. 2 of the drawings. As the rear night of the chains move over the idle sprockets I4, the portion of the chains between the shafts 'l and 9, will be pressed forwardly. The rod Il contacting with the stack of leaves, forces the leaves forwardly. to

,the position shown by Fig. 3, where the suction from the suction head 34 draws the outermost leaf into engagement with the suction head. The rod I] is'novv in a position to move behind the leaf which has been separated from the pack of leaves, as shownV by Fig. 2 of the drawings, and as the rod moves upwardly, this leaf is carried with the rod and turned over the shaft 1, exposing the adjacent leaf. l Y

VThis operation is continued until' al1 of the leaves of the pack have been displayed. When all of the leaves have been displayed, it is desirable to return the pack of leaves to their normal positions. Since the weigh-t of the leaves has been removed from the platel, the springs 28 Will move the plate 2l forwardly into the path of travel of the rod Il. 'Since the plate 21 is connected with the clamp, the plate 21 together with the clamp will be moved from the position shown by Fig. 4 of the drawings, to the position shown by Fig. 2 of the drawings, where the operation of the machine may be continued to successively display the leaves of the pack.

What is claimed is:

1. In a leaf turner, a movable, endless elevator having an ascending and a descending flight; a horizontal member mounted on the elevator and movable therewith; apparatus vfor suspending a pack of loose leaves adjacent one side 'of 'the' ascending flight of the elevator proximal' to said descending vflight thereof; means for holding said descending flight bent 'intermediate' the endsV thereoftoward said ascending iiight where a portion of the former is on the same side of the pack of leaves as the lascending flight, whereby said member contacts the pack of leavesgas` it descends and swings the pack of leaves toward said ascending flight, said pack of leaves returning to a normaly vertical position by force of gravity as the membermovestoward an ascendthe pack of leaves toward said ascending flight, said pack of leaves returning to a normal vertical position by force of gravity as the member moves toward an ascending position; and structure for receivingk and releasably holding one leaf of said pack as the remainder of said pack returns to said normal position, said means being disposed intermediate the ends of, said descending flight of the elevator whereby as said member descends it moves toward and away from the ascending flight as it approaches and leaves said means. i y

3. In a leaf turner, a movable, endless elevator having an ascending and a descendingight;1a horizontal member mounted on said elevator and movable therewith; apparatus rotatably mounted on a horizontal axis for suspending a pack of loose leaves adjacent the path of travel of' said member; means for swingingsaid leaves into the ascending path of travel of said member structure for holding a single leaf in the path of travel of the member as the sameascends, whereby themember folds thesingle leaf over said apparatus; and an element separate from said means, swingably mounted on said apparatus and depending there.- from for rotating the latter after the last leaf has been folded, said element having a spring for holding the same biased against the pack of leaves whereby the element automatically swings into the ascending path of travel of the member for actuation thereby to rotate the apparatus.

4. In a leaf turner as set forth in claim 3 whereinV said apparatus is provided with interlockingparts for holding the same againstv rotation and means for yieldably holding said parts interlocked. .f

DONALD S. BOYD.

REFRENCES CITED Number Name Date Boyd oct. 23,' 192e 

